General Packet Radio Service (GPRS) inyanzvi yekombiyuta inowedzera GSM (global system for mobile) mitambo yezwi nechitsigiri chezvinhu zve data. GPRS yakatevedzana mitambo inowanzotumidzwa mitambo inonzi 2.5G uye inotanga kuendeswa mberi ichidiwa nehutachiwana hwe 3G / 4G.
Nhoroondo yeGPRS
GPRS yaiva imwe yenzira dzekombiyuta dzakaita kuti seni rese ikwanise kuwirirana neInternet Protocol (IP) mitambo, zvichizadzikisa kubvumirwa kwekutanga muma 2000s (dzimwe nguva inonzi "GSM-IP"). Kukwanisa kuongorora Webhupu kubva pafoni panguva ipi zvayo ("nguva dzose" yekutengesa mashoko), iyo yakatorwa zvishoma munyika dzakawanda mazuva ano, yakanga ichiri chiitiko ipapo. Kunyange nanhasi, GPRS inoramba ichishandiswa kune dzimwe nzvimbo dzenyika iyo yave yakanyanya kudhura kuvandudza majekiseni emagetsi ekugadzirisa dzimwe nzira itsva.
Mobile Internet vapeji vakapa mazano eDPRS pamwe chete nenhepfenyuro yekunyoreswa kwezwi pamberi pehutano hwe 3G ne 4G dzakave dzakakurumbira. Nhasi makambani aibhadhara basa reGPRS maererano nehuwandu hwemagetsi ekutambisa akashandisa pakutumira uye kugamuchira deta kusvikira vapi vashanduri vakashandura kuti vape mapapiro emashandisirwo akawandisa semitambo nhasi.
EDGE (Enhanced Data rates ye GSM Evolution) teknolojia (inowanzonzi 2.75G) yakagadzirwa mumavambo ekutanga 2000s version yeGPRS. EDGE dzimwe nguva inonziwo Enhanced GPRS kana EGPRS chete.
GPRS teknolojia yakagadzirwa neEurope Telecommunications Standard Institute (ETSI). GPRS uye EDGE deployments zvose zvinotarisirwa pasi pekutarisirwa kweGweta reGreen Partnership Project (3GPP).
Zvichemo zveGPRS
GPRS inoshandisa packet kushandiswa kwekufambisa data. Inoshanda pakuderera zvakaderera zvakanyanya nemazuva ano - dhenda yemitengo yekutora inobva 28 Kbps kusvika 171 Kbps, ine kukurumidza kunyorera kunyange kuderera. (Kusiyana, EDGE yakatsigirwa kutengesa mitengo ye 384 Kbps paakatanga kubudiswa, gare gare ichiwedzerwa kusvika kusvika 1 Mbps .)
Zvimwe zvinotsigirwa neGPRS zvinosanganisira:
- Short Message Service (SMS) - zvakananga-chinangwa chekukurukurirana zvigadzirwa zvekutumira mameseji
- Multimedia Messaging Service (MMS) - kuwedzerwa kweSMS kuti zvibvumire kutumirwa kwevhidhiyo kunze kwemashoko
- Wireless Application Protocol (WAP) - imwe nzira inoshandiswa yekukurukurirana yevashambadziri vemafoni, yava kushanda
Kuendesa GPRS kumakambani anoda kuwedzera maitiro maviri emhando yehutachire kune maGMM anowanikwa:
- Gedhi GPRS Support Nodhi (GGSN) inobatanidza mupi webasa rese network pane Indaneti (kana imwe network ye IP). Aya majaira anotarisa mutengesi pakati pekunze nekunze.
- iyo Kushumira GPRS Support Nodhi (SGSN) inogara pakati pechipateri chemukati webasa uye nemichina yakatarisana nevatengi (zvikurukuru zviteshi zvepasi). Izvi zvinogadziridza uye zvinotarisira foni dzakasayirwa pane network (kusanganisira kushandiswa kwekushandisa).
GPRS Tunneling Protocol (GTP) inotsigira kuendesa kweDPRS nedhidhiyo kuburikidza neG GSM network infrastructure. GTP inonyanya kushandiswa pane User Datagram Protocol (UDP) .
Kushandisa GPRS
Kuti ushandise GPRS, munhu anofanira kunge ane foni uye anyoresa pane chirongwa chekushandisa apo mupiriri anobatsira.